French language website MacBidouille claims to have some bad news from its retail sources. While they were expecting to see iMacs arrive Nov. 27 (we also heard a similar time frame—with availability beginning around Black Friday) for the 21.5-inchers and later in December for the 27-inchers, both may now miss the all-important holiday shopping season.

The source blames a welding process for the delays, which would push the iMacs into 2013. The new iMacs also have a redesigned display that features a new thinner lamination process.

We first noted the delays in new iMac production in October and questioned whether the devices would be announced at the iPad mini event. Interestingly, we also heard that Apple might introduce an updated Thunderbolt Display in the not-so distant future that may be tied to the launch of the 27-inch iMac. Stay tuned for more information on that soon.